Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1600300severely pollutedexcellent21excellent
1500300severely pollutedexcellent31excellent
1400300severely pollutedexcellent31excellent
1300300severely pollutedexcellent41excellent
1200300severely pollutedexcellent51excellent
1100300severely pollutedexcellent51excellent
1000300severely pollutedexcellent41excellent
0900300severely pollutedexcellent71excellent
0800300severely pollutedexcellent81excellent
0700300severely pollutedexcellent81excellent
0600300severely pollutedexcellent71excellent
0500300severely pollutedexcellent61excellent
0400300severely pollutedexcellent61excellent
0300300severely pollutedexcellent51excellent
0200300severely pollutedexcellent71excellent
0100300severely pollutedexcellent71excellent
0000300severely pollutedexcellent71excellent
2300300severely pollutedexcellent61excellent
2200300severely pollutedexcellent51excellent
2100300severely pollutedexcellent51excellent
2000300severely pollutedexcellent41excellent
1900300severely pollutedexcellent41excellent
1800300severely pollutedexcellent31excellent
1700300severely pollutedexcellent31excellent